Fellow of balance (4)
I believe the answer is:
alan
'fellow' is the definition.
(man's name)
'of balance' is the wordplay.
'of' says the answer is hidden in the clue.
'ALAN' can be found hidden inside 'balance'.
(Other definitions for alan that I've seen before include "- Ayckbourn, English playwright" , "English historian/poet" , "Boy" , "English name" , "- Bennett, English dramatist, author" .)